@charset "utf-8";
 /* CSS Document */
#btn {
	width:40px; 
	height:40px; 
	position:fixed; 
	right:65px; 
	bottom:10px; 
	display:none; 
	background:url(images/top_bg.png) no-repeat left top;
}
#btn:hover {background:url(images/top_bg.png) no-repeat 0 -39px;}
